Laying hen moulting feed and artificial moulting method for quickly recovering high yield

Abstract

The invention provides a moulting feed for laying hens and an artificial moulting method for quickly recovering high yield, and the moulting feed for laying hens comprises the following raw materials in parts by mass: 7-8 parts of Chinese prickly ash seeds, 20-22 parts of crude protein feed, 0.5-2 parts of yeast culture, 2-4 parts of threonine residues, 8-10 parts of calcium-containing supplement, 0.1-1 part of soybean oil, 50-65 parts of corn and 2-3 parts of LD625. Wherein the content of crude protein is 15%-16%, and the content of calcium is 3%-4.0%. The specific formula of the laying hen moulting feed is optimally designed, and the illumination intensity and time in the moulting process are regulated and controlled, so that the second laying rate can quickly reach the peak and the second laying peak lasts for a long time after primary artificial moulting, and the laying rate of laying hens can reach the peak after secondary artificial moulting. The third-time egg laying rate can quickly reach the peak, the duration time of the third-time egg laying peak is long, the continuous and excellent egg laying effect is achieved, the moulting cost is reduced, the breeding period is prolonged, and application and popularization are facilitated.

Description

Technical Field

[0001] This application belongs to the field of agricultural breeding, specifically relating to a molting feed for laying hens and an artificial molting method for rapidly restoring high yields. Background Technology

[0002] Molting in laying hens is an important physiological phenomenon in their growth, development, and reproductive cycle. Natural molting is a spontaneous process that occurs in laying hens according to the season and their physiological cycle, usually starting after one complete laying cycle (approximately 50-60 weeks of age), primarily concentrated in autumn. Natural molting generally lasts 3-4 months, with significant individual variation. Furthermore, natural molting requires a large amount of nutrients to form new feathers; therefore, laying hens often stop laying eggs during molting. Consequently, the duration of molting significantly impacts the annual egg production of hens.

[0003] Natural molting is greatly influenced by individual differences, making its duration difficult to control and hindering egg production. To shorten the downtime during natural molting and improve breeding efficiency, current practices often involve artificial intervention in laying hens aged 60-72 weeks. This is achieved by controlling feed, water, and lighting conditions to induce concentrated molting within 2-3 weeks, followed by a rapid recovery in egg production and an extended laying cycle. However, the current commercial laying hen breeding cycle involves frequent shifts between peak and trough periods, posing significant breeding risks. The mortality rate of traditional molting methods is generally between 4% and 6%, and can exceed 20% in some cases. Moreover, the peak laying period only lasts about 2-4 months, resulting in a short duration. Therefore, the shortcomings of traditional artificial forced molting methods include the need for pre-molting grouping by size and strength, resulting in a large workload, high mortality rates during molting, and a short peak laying period after molting.

[0004] Furthermore, existing artificial forced molting techniques primarily study the first egg production after a single molt, neglecting the subsequent second molt and second egg production. How to improve subsequent egg production while simultaneously reducing molting costs and extending the peak laying period remains an unresolved technical problem. Therefore, a new artificial forced molting method is needed to address these issues. Summary of the Invention

[0005] In view of the technical problems existing in the background art, this application provides a molting feed for laying hens and an artificial molting method for rapid recovery of high production, aiming to solve the problem that existing artificial forced molting technology is unable to continuously improve molting costs and the duration of peak egg production.

[0006] In a first aspect, embodiments of this application provide a molting feed for laying hens, comprising the following ingredients by weight: 5-7 parts of Sichuan pepper seeds, 20-22 parts of crude protein feed, 0.5-2 parts of yeast culture, 2-4 parts of threonine residue, 8-10 parts of calcium supplement, 0.1-1 parts of soybean oil, 50-65 parts of corn, and 2-3 parts of LD625; the crude protein content in the molting feed is 15%-16% by weight, and the calcium content is 3%-4.0% by weight.

[0007] In some embodiments, the molting feed for laying hens comprises the following ingredients by weight: 6 parts of Sichuan pepper seeds, 20.2 parts of crude protein feed, 1 part of yeast culture, 3 parts of threonine residue, 8.8 parts of calcium supplement, 0.5 parts of soybean oil, 58 parts of corn, and 2.5 parts of LD625; the crude protein content in the molting feed for laying hens is 15.84% by weight, and the calcium content is 3.5% by weight.

[0008] In some embodiments, crude protein feed includes soybean meal.

[0009] In some embodiments, calcium supplements include limestone powder and calcium dihydrogen phosphate.

[0010] Secondly, embodiments of this application provide a method for rapidly restoring high yields through artificial molting, characterized by comprising the following steps: S1, screen laying hens and weigh them before stopping feeding; S2, stop feeding the laying hens, reduce the light intensity to 8-10 lx, and control the daily light duration to 8 hours until the weight of the laying hens drops by more than or equal to 30% after the second weighing, then stop feeding. S3, Formulate molting feed for laying hens, feed the laying hens after the feeding stoppage is terminated, control the calcium content of the molting feed to decrease first and then increase, and gradually increase the light intensity and daily light duration in stages after the second day of feeding until the laying hens complete one molting and start laying eggs for the second time; wherein, the formulated molting feed for laying hens is the molting feed for laying hens described in the first aspect above; S4: After the second egg-laying is completed, repeat steps S1 to S3 until the laying hen completes its second molt and begins its third egg-laying.

[0011] In some embodiments, in step S1, laying hens are screened based on their health status or the concentration of their weight distribution.

[0012] In some embodiments, the specific steps of controlling the calcium content of the molting feed for laying hens in step S3 include: controlling the calcium content of the molting feed for laying hens to be 3.5% on days 1 to 11; and controlling the calcium content of the molting feed for laying hens to be 4% on day 12 and thereafter.

[0013] In some embodiments, the specific steps of gradually increasing the light intensity in step S3 include: maintaining the light intensity of the chicken house at 8-10 lx on the first to third days of feeding; and gradually increasing the light intensity of the chicken house to 20 lx on the fourth day and thereafter.

[0014] In some embodiments, the specific steps for progressively increasing the daily light duration in step S3 include: for feeding days 1-3, the daily light duration is constant at 8 hours; for feeding days 4-5, the daily light duration is increased by 1 hour each day, gradually increasing from 8 hours to 10 hours; for feeding days 6-14, the daily light duration is increased by 0.5 hours each day, gradually increasing from 10 hours to 14 hours; after feeding day 15 or before the egg production rate reaches 50%, the daily light duration is constant at 14 hours; after the egg production rate reaches 50%, the daily light duration is increased by 0.5 hours each day, gradually increasing from 14 hours to 16 hours.

[0015] Compared with the prior art, the beneficial effects of this application include: 1. The domestic high-yielding laying hen molting feed and the method for rapid recovery of high production provided in this application are based on standardized production practice cases of domestic high-yielding laying hen breeds in laying hen farms. By optimizing the specific formula of the laying hen molting feed and combining it with the control of light intensity and light duration during the molting process, it is possible to achieve the following: after one artificial molting, the laying rate can quickly reach its peak, reaching 97.20%, and the second laying rate can quickly reach its peak, reaching 94.18%, with a long duration. At the same time, after two artificial molting, the laying rate can also quickly reach its peak, reaching 90.82%, with a long duration. Thus, both domestic high-yielding laying hens and foreign high-yielding laying hens can maintain high laying rates, long duration of laying peaks, and low mortality rates after molting.

[0016] 2. The molting feed for laying hens and the artificial molting method for rapid recovery of high production provided in this application effectively reduce the mortality rate of molting, significantly reduce molting costs, and improve economic benefits. Furthermore, the molting feed for laying hens and the artificial molting method for rapid recovery of high production can be applied to different breeds, making them more universal and conducive to large-scale promotion and application. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of this application, the accompanying drawings used in this application will be briefly described below. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without any creative effort.

[0018] Figure 1This is a flowchart illustrating one embodiment of the artificial molting method for rapid recovery of high yield provided in this application. Detailed Implementation

[0019] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0021] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] In existing technologies, the mortality rate of traditional molting methods is generally between 4% and 6%, and can exceed 20% in some cases. Furthermore, the peak egg production period only lasts about 2 to 4 months, resulting in a short duration. On one hand, traditional forced molting requires grouping chickens by size and strength before molting, which is labor-intensive. It also leads to a high mortality rate during molting and a short peak egg production period after molting. On the other hand, traditional forced molting techniques primarily study the egg production after the first molt, neglecting subsequent second molts and their egg production, thus lacking an effective method to continuously improve egg production.

[0023] To address the aforementioned problems, this application provides a molting feed for laying hens and a method for rapidly restoring high egg production through artificial molting. By optimizing the specific formula of the molting feed and simultaneously controlling the light intensity and duration during the molting process, the method enables the second peak egg production rate to quickly reach 94.18% after the first artificial molting, with a long duration. Furthermore, it enables the third peak egg production rate to quickly reach 90.82% after the second artificial molting, with a relatively long duration as well, thereby achieving a continuous increase in the laying hen's egg production rate.

[0024] In a first aspect, embodiments of this application provide a molting feed for laying hens, comprising the following ingredients by weight: 5-7 parts of Sichuan pepper seeds, 20-22 parts of crude protein feed, 0.5-2 parts of yeast culture, 2-4 parts of threonine residue, 8-10 parts of calcium supplement, 0.1-1 parts of soybean oil, 50-65 parts of corn, and 2-3 parts of LD625; the crude protein content in the molting feed is 15%-16% by weight, and the calcium content is 3%-4.0% by weight.

[0025] In some embodiments, the molting feed for laying hens comprises the following ingredients by weight: 6 parts of Sichuan pepper seeds, 20.2 parts of crude protein feed, 1 part of yeast culture, 3 parts of threonine residue, 8.8 parts of calcium supplement, 0.5 parts of soybean oil, 58 parts of corn, and 2.5 parts of LD625; the crude protein content in the molting feed for laying hens is 15.84% by weight, and the calcium content is 3.5% by weight.

[0026] In some embodiments, crude protein feed includes soybean meal.

[0027] In some embodiments, calcium supplements include limestone powder and calcium dihydrogen phosphate.

[0028] like Figure 1 As shown, in a second aspect, embodiments of this application provide a method for rapidly restoring high yields through artificial molting, characterized by comprising the following steps: S1. Select laying hens and weigh them before stopping feeding.

[0029] In some embodiments, the specific steps for screening laying hens in step S1 are as follows:

[0030] S2. Stop feeding the laying hens, reduce the light intensity to 8-10 lx, and control the daily light duration to 8 hours until the weight of the laying hens drops by more than or equal to 30% after the second weighing.

[0031] S3, prepare molting feed for laying hens, feed the laying hens after the feeding stoppage is terminated, control the calcium content of the molting feed to decrease first and then increase, and gradually increase the light intensity and daily light duration in stages after the second day of feeding until the laying hens complete one molting and start laying eggs for the second time; wherein, the prepared molting feed for laying hens is the molting feed for laying hens described in the first aspect above.

[0032] In some embodiments, the specific steps of controlling the calcium content of the molting feed for laying hens in step S3 include: controlling the calcium content of the molting feed for laying hens to be 3.5% on days 1 to 11; and controlling the calcium content of the molting feed for laying hens to be 4% on day 12 and thereafter.

[0033] In some embodiments, the specific steps of gradually increasing the light intensity in step S3 include: maintaining the light intensity of the chicken house at 8-10 lx on the first to third days of feeding; and gradually increasing the light intensity of the chicken house to 20 lx on the fourth day and thereafter.

[0034] In some embodiments, the specific steps for progressively increasing the daily light duration in step S3 include: for feeding days 1-3, the daily light duration is constant at 8 hours; for feeding days 4-5, the daily light duration is increased by 1 hour each day, gradually increasing from 8 hours to 10 hours; for feeding days 6-14, the daily light duration is increased by 0.5 hours each day, gradually increasing from 10 hours to 14 hours; after feeding day 15 or before the egg production rate reaches 50%, the daily light duration is constant at 14 hours; after the egg production rate reaches 50%, the daily light duration is increased by 0.5 hours each day, gradually increasing from 14 hours to 16 hours.

[0035] S4: After the second egg production is completed, repeat steps S1 to S3 until the laying hen completes its second molt and begins its third egg production.

[0036] The following are some specific embodiments. It should be noted that the embodiments described below are exemplary and are only used to explain this application, and should not be construed as limiting this application. Where specific techniques or conditions are not specified in the embodiments, they shall be performed in accordance with the techniques or conditions described in the literature in this field or according to the product instructions. Reagents or instruments whose manufacturers are not specified are all conventional products that can be obtained commercially.

[0037] Example 1 Domestic egg-laying hen breed: Jinghong; Scale: 50,000 birds, details as follows: The molting feed for laying hens in Example 1 comprises the following raw materials in parts by weight: 6 parts Sichuan pepper seeds, 20.2 parts soybean meal, 1 part yeast culture, 3 parts threonine residue, 8.8 parts limestone powder, 0.5 parts soybean oil, 58 parts corn, and 2.5 parts LD625. The test results showed that this molting feed contained 15.84% crude protein and 3.5% calcium by weight.

[0038] The specific cultivation steps in Example 1 are as follows: 1) Select 50 laying hens and weigh them before stopping feeding.

[0039] 2) Stop feeding the laying hens, reduce the light intensity to 8-10 lx, and control the daily light duration to 8 hours until the weight of the laying hens drops by more than or equal to 30% after the second weighing.

[0040] 3) Prepare the molting feed for laying hens by mixing and formulating according to the above formula and proportions.

[0041] 4) Feed the laying hens after the feed withdrawal period to the aforementioned molting feed, controlling the calcium content of the feed. From day 1 to day 11, the calcium content of the feed should be controlled at 3.5%; from day 12 onwards, the calcium content should be controlled at 4%. After day 2 of feeding, gradually increase the light intensity and increase the daily light duration in stages. The specific methods for controlling light intensity and duration are shown in Table 1.

[0042] 5) After the second egg production is completed, repeat steps 1) to 4) until the laying hen completes the second molt and begins the third egg production.

[0043] Table 1 Example 2 Domestic egg-laying hen breed: Jingfen; Scale: 50,000 birds, details as follows: The cultivation steps in Example 2 are the same as those in Example 1, except that the feed formula for laying hens during molting is different.

[0044] The molting feed for laying hens in Example 2 includes the following raw materials in parts by weight: 5 parts Sichuan pepper seeds, 20 parts soybean meal, 0.5 parts yeast culture, 2 parts threonine residue, 8 parts limestone powder, 0.1 parts soybean oil, 50 parts corn, and 3 parts LD625.

[0045] Example 3 Laying hen breed: Lohmann Grey; Size: 50,000 birds, details as follows: The cultivation steps in Example 3 are the same as those in Example 1, except that the feed formula for laying hens during molting is different.

[0046] The molting feed for laying hens in this embodiment 3 includes the following raw materials in parts by weight: 7 parts Sichuan pepper seeds, 22 parts soybean meal, 2 parts yeast culture, 4 parts threonine residue, 10 parts limestone powder, 1 part soybean oil, 65 parts corn, and 3 parts LD625.

[0047] Results Analysis The egg production conditions of the above-described embodiments and comparative examples were tested twice, and the specific results are shown in Tables 2 and 3.

[0048] Table 2. Statistics on secondary egg production after one molt. Table 3. Statistics on egg production after the second molt. The analysis of Examples 1-3 above is based on the production practice data results in Tables 2-3: 1. The addition of limestone powder and calcium dihydrogen phosphate to this molting feed for laying hens helps with bone calcium storage after molting, promotes calcium deposition in the eggshell, and facilitates eggshell formation. Production practice data shows that changes in the calcium content of this molting feed effectively reduce the paralysis of laying hens caused by rapid increases in egg production during the early laying period and bone calcium deficiency. This also reduces the mortality rate of laying hens.

[0049] In this molting method for laying hens, the light intensity is increased in stages. Reasonable light intensity stimulates the reproductive system to recover and improve, which helps laying hens ovulate. Production practice data shows that it increases the egg production rate, improves the quality of eggs, is conducive to the performance of laying hens, and reduces the mortality rate.

[0050] This molting method for laying hens involves segmented increases in lighting duration to simulate natural rhythms, reshape the biological clock, and meet the physiological needs of poultry for nighttime calcium absorption, while avoiding stress and light intolerance in laying hens. Production practice data shows that appropriate lighting duration enables laying hens to steadily reach and maintain peak egg production for an extended period.

[0051] This molting feed for laying hens and the artificial molting method for rapid recovery of high production can maintain a high egg production rate, a long peak egg production period, and a low mortality rate.

[0052] 5. This molting feed for laying hens and the artificial molting method for rapid recovery of high production can be applied to different breeds of high-producing laying hens in large-scale laying hen farms.

[0053] It should be noted that this application is not limited to the above-described embodiments. The above embodiments are merely examples, and any embodiments with the same structure and effect as the technical concept within the scope of this application are included in the technical scope of this application. Furthermore, various modifications that can be conceived by those skilled in the art to the embodiments, and other ways of constructing by combining some of the constituent elements of the embodiments, without departing from the spirit of this application, are also included in the scope of this application.

Claims

1. A molting feed for laying hens, characterized in that, The ingredients, by weight, include the following: 5-7 parts of Sichuan pepper seeds, 20-22 parts of crude protein feed, 0.5-2 parts of yeast culture, 2-4 parts of threonine residue, 8-10 parts of calcium supplement, 0.1-1 part of soybean oil, 50-65 parts of corn, and 2-3 parts of LD625. The feed for laying hens undergoing molting contains 15%–16% crude protein and 3%–4.0% calcium by mass.

2. The molting feed for laying hens according to claim 1, characterized in that, The ingredients, by weight, include the following: 6 parts Sichuan pepper seeds, 20.2 parts crude protein feed, 1 part yeast culture, 3 parts threonine residue, 8.8 parts calcium supplement, 0.5 parts soybean oil, 58 parts corn, and 2.5 parts LD625. The feed for laying hens undergoing molting contains 15.84% crude protein and 3.5% calcium by mass. The yeast culture is a fermentation product based on chrysanthemum meal.

3. The molting feed for laying hens according to claim 1, characterized in that, The crude protein feed includes soybean meal.

4. The molting feed for laying hens according to claim 1, characterized in that, The calcium supplement includes limestone powder and calcium dihydrogen phosphate.

5. A method for rapidly restoring high yields through artificial molting, characterized in that, Includes the following steps: S1, screen laying hens and weigh them before stopping feeding; S2, stop feeding the laying hens, reduce the light intensity to 8-10 lx, and control the daily light duration to 8 hours until the weight of the laying hens drops by more than or equal to 30% after the second weighing, then stop feeding. S3, prepare molting feed for laying hens, feed the molting feed to laying hens after the feeding is stopped, control the calcium content of the molting feed to decrease first and then increase, and gradually increase the light intensity and increase the daily light duration in stages after the second day of feeding until the laying hens complete one molting and start laying eggs for the second time. S4. After the second egg production is completed, repeat steps S1 to S3 until the laying hen completes its second molt and begins its third egg production. In step S3, the prepared molting feed for laying hens is any one of the molting feeds for laying hens described in claims 1 to 3.

6. The method for rapid recovery of high yield through artificial molting according to claim 5, characterized in that, In step S1, laying hens are selected based on their health status or the concentration of their weight distribution.

7. The method for rapid recovery of high yield through artificial molting according to claim 5, characterized in that, In step S3, the specific steps for controlling the calcium content of the molting feed for laying hens to decrease first and then increase include: During days 1-11 of feeding, the calcium content in the molting feed for laying hens was controlled at 3.5%. From day 12 onwards, the calcium content of the feed for laying hens undergoing molting should be controlled at 4%.

8. The method for rapid recovery of high yield through artificial molting according to claim 5, characterized in that, In step S3, the specific steps for gradually increasing the light intensity include: During the first to third days of feeding, maintain a light intensity of 8 to 10 lx in the chicken house; On the 4th day after feeding, gradually increase the light intensity in the chicken house to 20 lx.

9. The method for rapid recovery of high yield through artificial molting according to claim 5, characterized in that, In step S3, the specific steps for segmentedly increasing the daily light exposure duration include: During the first three days of feeding, the daily light duration was kept constant at 8 hours. On the 4th to 5th day of feeding, the light duration was increased by 1 hour each day, gradually increasing from 8 hours to 10 hours per day; From day 6 to day 14 of feeding, the daily light duration was increased by 0.5 hours, gradually increasing from 10 hours to 14 hours. After the 15th day of feeding or before the egg production rate rises to 50%, the daily light duration is kept constant at 14 hours. After the egg production rate rises to 50%, the daily light duration is increased by 0.5 hours, gradually increasing from 14 hours to 16 hours.

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